i pay a direct debit each month,do I need to submit my meter readings every month or every quarter.thanks.

Bulb will be happy if you supply quarterly readings, but statements are emailed every month.
If you want accurate bills rather than estimates, they recommend submitting readings 2-3 days before the statement is issued.
I’ve been submitting 2 days before the statement for several months without a problem.

Hi @spitfire616, exactly what @198kHz said. If you don’t mind having a few estimated statements, then having your statements ‘catch up’ to your actual usage then once a quarter will be fine. If you’d rather all your statements be accurate, then 2 days before your statement date would be absolutely perfect